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How to Solve K Highest Ranked Items Within a Price Range Problem
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Start Free for WindowsMedium#2146
LeetCode ProblemK Highest Ranked Items Within a Price Range
You are given a 0-indexed 2D integer array grid of size m x n that represents a map of the items in a shop. The integers in the grid represent the following: It takes 1 step to travel between adjacent grid cells. You are also given integer arrays pricing and start where pricing = [low, high] and start = [row, col] indicates that you start at the position (row, col) and are interested only in items with a price in the range of [low, high] (inclusive). You are further given an integer k. You are interested in the positions of the k highest-ranked items whose prices are within the given price range. The rank is determined by the first of these criteria that is different: Return the k highest-ranked items within the price range sorted by their rank (highest to lowest). If there are fewer than k reachable items within the price range, return all of them.
ArrayBreadth-First SearchSortingHeap (Priority Queue)Matrix
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Problem Breakdown
Understanding the K Highest Ranked Items Within a Price Range Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given a 0-indexed 2D integer array grid of size m x n that represents a map of the items in a shop. The integers in the grid represent the following: It takes 1 step to travel between adjacent grid cells. You are also given integer arrays pricing and start where pricing = [low, high] and start = [row, col] indicates that you start at the position (row, col) and are interested only in items with a price in the range of [low, high] (inclusive). You are further given an integer k. You are interested in the positions of the k highest-ranked items whose prices are within the given price range. The rank is determined by the first of these criteria that is different: Return the k highest-ranked items within the price range sorted by their rank (highest to lowest). If there are fewer than k reachable items within the price range, return all of them.
MediumProblem #2146
LeetCodeK Highest Ranked Items Within a Price Range
Related Topics
ArrayBreadth-First SearchSortingHeap (Priority Queue)Matrix
How Phantom Code Helps
Get real-time assistance for K Highest Ranked Items Within a Price Range problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
grid = [[1,2,0,1],[1,3,0,1],[0,2,5,1]], pricing = [2,5], start = [0,0], k = 3
Output
[[0,1],[1,1],[2,1]]
# Example 2
Input
grid = [[1,2,0,1],[1,3,3,1],[0,2,5,1]], pricing = [2,3], start = [2,3], k = 2
Output
[[2,1],[1,2]]
# Example 3
Input
grid = [[1,1,1],[0,0,1],[2,3,4]], pricing = [2,3], start = [0,0], k = 3
Output
[[2,1],[2,0]]
Constraints
m == grid.length
n == grid[i].length
1 <= m, n <= 105
1 <= m * n <= 105
0 <= grid[i][j] <= 105
pricing.length == 2
2 <= low <= high <= 105
start.length == 2
0 <= row <= m - 1
0 <= col <= n - 1
grid[row][col] > 0
1 <= k <= m * n
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Solve K Highest Ranked Items Within a Price Range — You are given a 0-indexed 2D integer array grid of size m x n that represents a ...
Here's the optimal approach using Array:
def solve(input):
# Optimal O(n) solution
return result
Time: O(n) | Space: O(n)
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Frequently Asked Questions
Common questions about solving K Highest Ranked Items Within a Price Range and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like K Highest Ranked Items Within a Price Range during interviews?
Phantom Code generates complete solutions instantly with proper complexity analysis, letting you focus on explaining your approach and demonstrating problem-solving skills rather than getting stuck on implementation details during high-pressure situations.
What if the interviewer asks follow-up questions or modifications to problems like K Highest Ranked Items Within a Price Range?
Phantom Code adapts in real-time. Screenshot the modified problem or use audio mode to capture the interviewer's follow-up, and get an updated solution within seconds — including edge cases and optimizations.
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Yes. Phantom Code provides step-by-step approach explanations with 3 progressive thoughts, so you can walk through your solution naturally. It also provides time and space complexity analysis to discuss trade-offs.
How does Phantom Code assist with different programming languages for K Highest Ranked Items Within a Price Range type problems?
Phantom Code supports 11 programming languages including Python, Java, C++, JavaScript, TypeScript, Go, Rust, Ruby, Swift, Kotlin, and C#. Set your preferred language and get idiomatic solutions.
What coding mistakes does Phantom Code help me avoid during K Highest Ranked Items Within a Price Range interviews?
Phantom Code catches common mistakes like off-by-one errors, missing edge cases, incorrect base conditions, and suboptimal approaches. It provides clean, well-structured code that handles all edge cases.
Is Phantom Code detectable when solving problems like K Highest Ranked Items Within a Price Range during live interviews?
No. Phantom Code runs as an invisible desktop overlay that doesn't appear in screen shares, recordings, or proctoring software. It works with Zoom, HackerRank, CodeSignal, CoderPad, and all major platforms.
How does Phantom Code help when I'm struggling with K Highest Ranked Items Within a Price Range style questions under pressure?
The AI provides structured guidance: first the approach (what algorithm/data structure to use and why), then the implementation with clean code, and finally complexity analysis. This helps you think clearly even under pressure.
Does Phantom Code work for the coding platforms used in K Highest Ranked Items Within a Price Range interviews?
Yes. Phantom Code works with all major coding platforms including LeetCode, HackerRank, CodeSignal, CoderPad, HackerEarth, and any browser-based coding environment.
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